It is b. he acquires a greater appreciation for his father and his cultural heritage
D, because when you have two nouns, the verb you should use goes for the noun closest to the verb.
The credible peer-reviewed source is: The structure of credibility and authority prevents material being published which contains false data or speculation that could mislead its audience.
I don't know which article you are referring to, but cloning is generally portrayed unfavorably in the movies.
Let's take for example the movie "The Island" which showed that cloning is a potential source of suffering for the people cloned or "Never Let me go" which also showed suffering fr the cloned people.
